Application Guide

How to Apply for Senior Software Engineer (m/f/d)

at 1KOMMA5°

🏢 About 1KOMMA5°

1KOMMA5° is unique for integrating renewable energy hardware (solar, batteries, heat pumps, e-mobility) with scalable software through their Heartbeat AI platform, creating intelligent, automated energy systems. Their mission to transition 1.5 million households to renewable energy by 2030 combines environmental impact with technical innovation. Working here means contributing to a tangible solution for climate change while building cutting-edge distributed energy systems.

About This Role

This Senior Software Engineer role focuses on transforming service processes for renewable technologies at scale through their service and CRM platform. You'll be building solutions that directly impact how thousands of households manage their renewable energy systems. The role involves developing software that connects regional craftsmanship with scalable technology to create efficient, automated service workflows.

💡 A Day in the Life

A typical day involves developing features for their service and CRM platform that optimize how renewable technology systems are maintained and serviced. You'll collaborate with teams working on different energy components (solar, batteries, heat pumps) to ensure seamless integration, while building software that enables automated, efficient service processes at scale across their growing network.

🎯 Who 1KOMMA5° Is Looking For

  • Experience building scalable service/CRM platforms, particularly for hardware or IoT systems
  • Background in distributed systems or platforms that integrate multiple components (solar, batteries, heat pumps, e-mobility)
  • Understanding of energy markets, renewable technologies, or IoT device management
  • Ability to work on software that bridges technical systems with real-world service operations

📝 Tips for Applying to 1KOMMA5°

1

Highlight specific experience with service platforms, CRM systems, or IoT device management in your resume

2

Demonstrate understanding of how software can optimize service processes for physical hardware systems

3

Show how your work has enabled scaling of operations or improved efficiency in previous roles

4

Reference 1KOMMA5°'s specific technologies (Heartbeat AI, virtual power plant, integrated energy systems)

5

Explain how your technical skills can contribute to their 2030 goal of transitioning 1.5 million households

✉️ What to Emphasize in Your Cover Letter

['Your experience with scalable service/CRM platforms and how it applies to renewable technology servicing', "Understanding of 1KOMMA5°'s integrated approach to solar, batteries, heat pumps, and e-mobility", 'How your work can help transform service processes at scale for renewable technologies', "Alignment with their vision of 'Living on wind and sunlight forever for free' through technical solutions"]

Generate Cover Letter →

🔍 Research Before Applying

To stand out, make sure you've researched:

  • 1KOMMA5°'s Heartbeat AI platform and virtual power plant technology
  • Their specific approach to integrating solar, batteries, heat pumps, and e-mobility
  • The company's growth from 80+ locations worldwide and their 2030 household transition goal
  • How their platform connects regional craftsmanship with scalable software

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Technical challenges in building scalable service platforms for distributed hardware systems
2 Experience with CRM systems in hardware/IoT contexts
3 Understanding of renewable energy systems integration (solar, batteries, heat pumps, e-mobility)
4 Approach to automating service processes and connecting them to energy markets
5 How you've contributed to scaling operations in previous software roles
Practice Interview Questions →

⚠️ Common Mistakes to Avoid

  • Generic software engineering experience without connection to service platforms or hardware integration
  • No understanding of how renewable energy systems work or their service requirements
  • Focusing only on technical skills without showing how they apply to 1KOMMA5°'s specific mission

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

Offer

Congratulations!

Ready to Apply?

Good luck with your application to 1KOMMA5°!